ASTM_E_2096_-_E_2096M_-_10.pdf

Designation:E2096/E2096M10Standard Practice forIn Situ Examination of Ferromagnetic Heat-Exchanger TubesUsing Remote Field Testing1This standard is issued under the fixed designation E2096/E2096M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This practice describes procedures to be followed duringremote field examination of installed ferromagnetic heat-exchanger tubing for baseline and service-induced discontinui-ties.1.2 This practice is intended for use on ferromagnetic tubeswith outside diameters from 0.500 to 2.000 in.12.70 to 50.80mm,with wall thicknesses in the range from 0.028 to 0.134 in.0.71 to 3.40 mm.1.3 This practice does not establish tube acceptance criteria;the tube acceptance criteria must be specified by the usingparties.1.4 UnitsThe values stated in either inch-pound units orSI units are to be regarded separately as standard.The valuesstated in each system may not be exact equivalents;therefore,each system shall be used independently of the other.Combin-ing values from the two systems may result in nonconformancewith the standard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this practice to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2E543 Specification for Agencies Performing NondestructiveTestingE1316 Terminology for Nondestructive Examinations2.2 Other Documents:ASNT SNT-TC-1A Recommended Practice for Nondestruc-tive Testing Personnel Qualification and Certification3Can CGSB-48.9712-95 Qualification of NondestructiveTesting Personnel,Natural Resources Canada43.Terminology3.1 GeneralDefinitions of terms used in this practice canbe found in Terminology E1316,Section A,“Common NDTTerms,”and Section C,“Electromagnetic Testing.”3.2 Definitions:3.2.1 detector,none or more coils or elements used tosense or measure magnetic field;also known as a receiver.3.2.2 exciter,na device that generates a time-varyingelectromagnetic field,usually a coil energized with alternatingcurrent(ac);also known as a transmitter.3.2.3 nominal tube,na tube or tube section meeting thetubing manufacturers specifications,with relevant propertiestypical of a tube being examined,used for reference ininterpretation and evaluation.3.2.4 remote field,n as applied to nondestructive testing,the electromagnetic field which has been transmitted throughthe test object and is observable beyond the direct couplingfield of the exciter.3.2.5 remote field testing,na nondestructive test methodthat measures changes in the remote field to detect andcharacterize discontinuities.3.2.6 using parties,nthe supplier and purchaser.3.2.6.1 DiscussionThe party carrying out the examinationis referred to as the“supplier,”and the party requesting theexamination is referred to as the“purchaser,”as required inForm and Style for ASTM Standards,April 2004.In commonusage outside this practice,these parties are often referred to asthe“operator”and“customer,”respectively.3.3 Definitions of Terms Specific to This Standard:1This practice is under the jurisdiction of ASTM Committee E07 on Nonde-structive Testing and is the direct responsibility of Subcommittee E07.07 onElectromagnetic Method.Current edition approved Sept.1,2010.Published October 2010.Originallyapproved in 2000.Last previous edition approved in 2005 as E2096-05.DOI:10.1520/E2096_E2096M-10.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available fromAmerican Society for Nondestructive Testing(ASNT),P.O.Box28518,1711 Arlingate Ln.,Columbus,OH 43228-0518,http:/www.asnt.org.4Available from CGSB Sales Centre;Place du Portage,Phase 3,6B1;11 LaurierStreet,Hull QC,Canada K1A 1G6.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.3.1 flaw characterization standard,na standard used inaddition to the RFT system reference standard,with artificial orservice-induced flaws,used for flaw characterization.3.3.2 nominal point,na point on the phase-amplitudediagram representing data from nominal tube.3.3.3 phase-amplitude diagram,na two-dimensional rep-resentation of detector output voltage,with angle representingphase with respect to a reference signal,and radius represent-ing amplitude(Fig.1a and 1b).3.3.3.1 DiscussionIn this practice,care has been taken touse the term“phase angle”(and“phase”)to refer to an angularequivalent of time d